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@@ -0,0 +1,1968 @@
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+{
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+ This file is part of the Free Pascal run time library.
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+ Copyright (c) 1999-2005 by Florian Klaempfl,
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+ member of the Free Pascal development team.
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+
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+ This file implements support routines for WideStrings/Unicode with FPC
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+
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+ See the file COPYING.FPC, included in this distribution,
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+ for details about the copyright.
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+
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+ This program is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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+
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+ **********************************************************************}
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+
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+{
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+ This file contains the implementation of the WideString type,
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+ and all things that are needed for it.
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+ WideString is defined as a 'silent' pwidechar :
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+ a pwidechar that points to :
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+
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+ @-8 : SizeInt for reference count;
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+ @-4 : SizeInt for size; size=number of bytes, not the number of chars. Divide or multiply
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+ with sizeof(WideChar) to convert. This is needed to be compatible with Delphi and
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+ Windows COM BSTR.
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+ @ : String + Terminating #0;
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+ Pwidechar(Widestring) is a valid typecast.
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+ So WS[i] is converted to the address @WS+i-1.
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+
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+ Constants should be assigned a reference count of -1
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+ Meaning that they can't be disposed of.
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+}
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+
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+Type
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+ PWideRec = ^TWideRec;
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+ TWideRec = Packed Record
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+{$ifdef FPC_WINLIKEWIDESTRING}
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+ Len : DWord;
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+{$else FPC_WINLIKEWIDESTRING}
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+ Ref : SizeInt;
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+ Len : SizeInt;
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+{$endif FPC_WINLIKEWIDESTRING}
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+ First : WideChar;
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+ end;
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+
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+Const
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+ WideRecLen = SizeOf(TWideRec);
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+ WideFirstOff = SizeOf(TWideRec)-sizeof(WideChar);
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+
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+{
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+ Default WideChar <-> Char conversion is to only convert the
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+ lower 127 chars, all others are translated to spaces.
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+
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+ These routines can be overwritten for the Current Locale
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+}
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+
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+procedure DefaultWide2AnsiMove(source:pwidechar;var dest:ansistring;len:SizeInt);
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+var
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+ i : SizeInt;
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+begin
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+ setlength(dest,len);
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+ for i:=1 to len do
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+ begin
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+ if word(source^)<256 then
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+ dest[i]:=char(word(source^))
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+ else
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+ dest[i]:='?';
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+ inc(source);
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+ end;
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+end;
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+
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+
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+procedure DefaultAnsi2WideMove(source:pchar;var dest:widestring;len:SizeInt);
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+var
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+ i : SizeInt;
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+begin
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+ setlength(dest,len);
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+ for i:=1 to len do
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+ begin
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+ dest[i]:=widechar(byte(source^));
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+ inc(source);
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+ end;
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+end;
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+
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+
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+Procedure GetWideStringManager (Var Manager : TWideStringManager);
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+begin
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+ manager:=widestringmanager;
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+end;
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+
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+
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+Procedure SetWideStringManager (Const New : TWideStringManager; Var Old: TWideStringManager);
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+begin
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+ Old:=widestringmanager;
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+ widestringmanager:=New;
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+end;
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+
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+
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+Procedure SetWideStringManager (Const New : TWideStringManager);
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+begin
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+ widestringmanager:=New;
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+end;
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+
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+(*
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+Procedure UniqueWideString(Var S : WideString); [Public,Alias : 'FPC_WIDESTR_UNIQUE'];
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+{
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+ Make sure reference count of S is 1,
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+ using copy-on-write semantics.
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+}
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+
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+begin
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+end;
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+*)
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+
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+
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+{****************************************************************************
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+ Internal functions, not in interface.
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+****************************************************************************}
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+
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+
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+procedure WideStringError;
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+ begin
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+ HandleErrorFrame(204,get_frame);
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+ end;
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+
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+
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+{$ifdef WideStrDebug}
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+Procedure DumpWideRec(S : Pointer);
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+begin
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+ If S=Nil then
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+ Writeln ('String is nil')
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+ Else
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+ Begin
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+ With PWideRec(S-WideFirstOff)^ do
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+ begin
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+ Write ('(Len:',len);
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+ Writeln (' Ref: ',ref,')');
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+ end;
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+ end;
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+end;
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+{$endif}
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+
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+
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+Function NewWideString(Len : SizeInt) : Pointer;
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+{
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+ Allocate a new WideString on the heap.
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+ initialize it to zero length and reference count 1.
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+}
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+Var
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+ P : Pointer;
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+begin
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+{$ifdef MSWINDOWS}
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+ if winwidestringalloc then
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+ begin
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+ P:=SysAllocStringLen(nil,Len);
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+ if P=nil then
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+ WideStringError;
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+ end
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+ else
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+{$endif MSWINDOWS}
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+ begin
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+ GetMem(P,Len*sizeof(WideChar)+WideRecLen);
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+ If P<>Nil then
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+ begin
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+ PWideRec(P)^.Len:=Len*2; { Initial length }
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+{$ifndef FPC_WINLIKEWIDESTRING}
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+ PWideRec(P)^.Ref:=1; { Initial Refcount }
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+{$endif FPC_WINLIKEWIDESTRING}
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+ PWideRec(P)^.First:=#0; { Terminating #0 }
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+ inc(p,WideFirstOff); { Points to string now }
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+ end
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+ else
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+ WideStringError;
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+ end;
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+ NewWideString:=P;
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+end;
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+
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+
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+Procedure DisposeWideString(Var S : Pointer);
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+{
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+ Deallocates a WideString From the heap.
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+}
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+begin
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+ If S=Nil then
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+ exit;
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+{$ifndef MSWINDOWS}
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+ Dec (S,WideFirstOff);
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+ Freemem(S);
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+{$else MSWINDOWS}
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+ if winwidestringalloc then
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+ SysFreeString(S)
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+ else
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+ begin
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+ Dec (S,WideFirstOff);
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+ Freemem(S);
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+ end;
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+{$endif MSWINDOWS}
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+ S:=Nil;
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+end;
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+
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+{$ifdef FPC_WINLIKEWIDESTRING}
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+var
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+ __data_start: byte; external name '__data_start__';
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+ __data_end: byte; external name '__data_end__';
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+
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+function IsWideStringConstant(S: pointer): boolean;{$ifdef SYSTEMINLINE}inline;{$endif}
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+{
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+ Returns True if widestring is constant (located in .data section);
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+}
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+begin
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+ Result:=(S>=@__data_start) and (S<@__data_end);
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+end;
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+{$endif FPC_WINLIKEWIDESTRING}
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+
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+Procedure fpc_WideStr_Decr_Ref (Var S : Pointer);[Public,Alias:'FPC_WIDESTR_DECR_REF']; compilerproc;
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+{
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+ Decreases the ReferenceCount of a non constant widestring;
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+ If the reference count is zero, deallocate the string;
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+}
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+Type
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+ pSizeInt = ^SizeInt;
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+{$ifndef FPC_WINLIKEWIDESTRING}
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+Var
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+ l : pSizeInt;
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+{$endif FPC_WINLIKEWIDESTRING}
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+Begin
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+ { Zero string }
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+ if S=Nil then
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+ exit;
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+{$ifndef FPC_WINLIKEWIDESTRING}
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+ { check for constant strings ...}
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+ l:=@PWideRec(S-WideFirstOff)^.Ref;
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+ if l^<0 then
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+ exit;
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+
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+ { declocked does a MT safe dec and returns true, if the counter is 0 }
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+ if declocked(l^) then
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+ { Ref count dropped to zero ...
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+ ... remove }
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+{$else}
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+ if not IsWideStringConstant(S) then
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+{$endif FPC_WINLIKEWIDESTRING}
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+ DisposeWideString(S);
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+end;
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+
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+{ alias for internal use }
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+Procedure fpc_WideStr_Decr_Ref (Var S : Pointer);[external name 'FPC_WIDESTR_DECR_REF'];
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+
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+Procedure fpc_WideStr_Incr_Ref(Var S : Pointer);[Public,Alias:'FPC_WIDESTR_INCR_REF']; compilerproc;
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+{$ifdef FPC_WINLIKEWIDESTRING}
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+ var
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+ p : pointer;
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+{$endif FPC_WINLIKEWIDESTRING}
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+ Begin
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+ If S=Nil then
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+ exit;
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+{$ifdef FPC_WINLIKEWIDESTRING}
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+ p:=NewWidestring(length(WideString(S)));
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+ move(s^,p^,(length(WideString(s))+1)*sizeof(widechar)); // double #0 too
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+ s:=p;
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+{$else FPC_WINLIKEWIDESTRING}
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+ { Let's be paranoid : Constant string ??}
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+ If PWideRec(S-WideFirstOff)^.Ref<0 then
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+ exit;
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+ inclocked(PWideRec(S-WideFirstOff)^.Ref);
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+{$endif FPC_WINLIKEWIDESTRING}
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+ end;
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+
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+{ alias for internal use }
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+Procedure fpc_WideStr_Incr_Ref (Var S : Pointer);[external name 'FPC_WIDESTR_INCR_REF'];
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+
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+{$ifndef FPC_STRTOSHORTSTRINGPROC}
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+function fpc_WideStr_To_ShortStr (high_of_res: SizeInt;const S2 : WideString): shortstring;[Public, alias: 'FPC_WIDESTR_TO_SHORTSTR']; compilerproc;
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+{
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+ Converts a WideString to a ShortString;
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+}
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+Var
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+ Size : SizeInt;
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+ temp : ansistring;
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+begin
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+ result:='';
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+ Size:=Length(S2);
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+ if Size>0 then
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+ begin
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+ If Size>high_of_res then
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+ Size:=high_of_res;
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+ widestringmanager.Wide2AnsiMoveProc(PWideChar(S2),temp,Size);
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+ result:=temp;
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+ end;
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+end;
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+{$else FPC_STRTOSHORTSTRINGPROC}
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+procedure fpc_WideStr_To_ShortStr (out res: ShortString;const S2 : WideString); [Public, alias: 'FPC_WIDESTR_TO_SHORTSTR'];compilerproc;
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+{
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+ Converts a WideString to a ShortString;
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+}
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+Var
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+ Size : SizeInt;
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+ temp : ansistring;
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+begin
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+ res:='';
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+ Size:=Length(S2);
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+ if Size>0 then
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+ begin
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+ If Size>high(res) then
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+ Size:=high(res);
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+ widestringmanager.Wide2AnsiMoveProc(PWideChar(S2),temp,Size);
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+ res:=temp;
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+ end;
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+end;
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+{$endif FPC_STRTOSHORTSTRINGPROC}
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+
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+
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+Function fpc_ShortStr_To_WideStr (Const S2 : ShortString): WideString;compilerproc;
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+{
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+ Converts a ShortString to a WideString;
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+}
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+Var
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+ Size : SizeInt;
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+begin
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+ result:='';
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+ Size:=Length(S2);
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+ if Size>0 then
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+ begin
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+ widestringmanager.Ansi2WideMoveProc(PChar(@S2[1]),result,Size);
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+ { Terminating Zero }
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+ PWideChar(Pointer(fpc_ShortStr_To_WideStr)+Size*sizeof(WideChar))^:=#0;
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+ end;
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+end;
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+
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+
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+Function fpc_WideStr_To_AnsiStr (const S2 : WideString): AnsiString; compilerproc;
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+{
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+ Converts a WideString to an AnsiString
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+}
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+Var
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+ Size : SizeInt;
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+begin
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+ result:='';
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+ Size:=Length(S2);
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+ if Size>0 then
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+ widestringmanager.Wide2AnsiMoveProc(PWideChar(Pointer(S2)),result,Size);
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+end;
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+
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+
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+Function fpc_AnsiStr_To_WideStr (Const S2 : AnsiString): WideString; compilerproc;
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+{
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+ Converts an AnsiString to a WideString;
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+}
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+Var
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+ Size : SizeInt;
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+begin
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+ result:='';
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+ Size:=Length(S2);
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+ if Size>0 then
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+ widestringmanager.Ansi2WideMoveProc(PChar(S2),result,Size);
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+end;
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+
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+
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+Function fpc_PWideChar_To_AnsiStr(const p : pwidechar): ansistring; compilerproc;
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+var
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+ Size : SizeInt;
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+begin
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+ result:='';
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+ if p=nil then
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+ exit;
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+ Size := IndexWord(p^, -1, 0);
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+ if Size>0 then
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+ widestringmanager.Wide2AnsiMoveProc(P,result,Size);
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+end;
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+
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+
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+Function fpc_PWideChar_To_WideStr(const p : pwidechar): widestring; compilerproc;
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+var
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+ Size : SizeInt;
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+begin
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+ result:='';
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+ if p=nil then
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+ exit;
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+ Size := IndexWord(p^, -1, 0);
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+ Setlength(result,Size);
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+ if Size>0 then
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+ begin
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+ Move(p^,PWideChar(Pointer(result))^,Size*sizeof(WideChar));
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+ { Terminating Zero }
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+ PWideChar(Pointer(result)+Size*sizeof(WideChar))^:=#0;
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+ end;
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+end;
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+
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+
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+{$ifndef FPC_STRTOSHORTSTRINGPROC}
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+Function fpc_PWideChar_To_ShortStr(const p : pwidechar): shortstring; compilerproc;
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+var
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+ Size : SizeInt;
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+ temp: ansistring;
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+begin
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+ result:='';
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+ if p=nil then
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+ exit;
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+ Size := IndexWord(p^, $7fffffff, 0);
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+ if Size>0 then
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+ begin
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+ widestringmanager.Wide2AnsiMoveProc(p,temp,Size);
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+ result:=temp;
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+ end;
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+end;
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+{$else FPC_STRTOSHORTSTRINGPROC}
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+procedure fpc_PWideChar_To_ShortStr(out res : shortstring;const p : pwidechar); compilerproc;
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+var
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+ Size : SizeInt;
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+ temp: ansistring;
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+begin
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+ res:='';
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+ if p=nil then
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+ exit;
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+ Size:=IndexWord(p^, high(PtrInt), 0);
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+ if Size>0 then
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+ begin
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+ widestringmanager.Wide2AnsiMoveProc(p,temp,Size);
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+ res:=temp;
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+ end;
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+end;
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+{$endif FPC_STRTOSHORTSTRINGPROC}
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+
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+
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+{ checked against the ansistring routine, 2001-05-27 (FK) }
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+Procedure fpc_WideStr_Assign (Var S1 : Pointer;S2 : Pointer);[Public,Alias:'FPC_WIDESTR_ASSIGN']; compilerproc;
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+{
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+ Assigns S2 to S1 (S1:=S2), taking in account reference counts.
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+}
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+begin
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+{$ifdef FPC_WINLIKEWIDESTRING}
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+ if S1=S2 then exit;
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+ if S2<>nil then
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+ begin
|
|
|
+ if IsWideStringConstant(S1) then
|
|
|
+ begin
|
|
|
+ S1:=NewWidestring(length(WideString(S2)));
|
|
|
+ move(s2^,s1^,(length(WideString(s1))+1)*sizeof(widechar));
|
|
|
+ end
|
|
|
+ else
|
|
|
+{$ifdef MSWINDOWS}
|
|
|
+ if winwidestringalloc then
|
|
|
+ begin
|
|
|
+ if SysReAllocStringLen(S1, S2, Length(WideString(S2))) = 0 then
|
|
|
+ WideStringError;
|
|
|
+ end
|
|
|
+ else
|
|
|
+{$endif MSWINDOWS}
|
|
|
+ begin
|
|
|
+ SetLength(WideString(S1),length(WideString(S2)));
|
|
|
+ move(s2^,s1^,(length(WideString(s1))+1)*sizeof(widechar));
|
|
|
+ end;
|
|
|
+ end
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ { Free S1 }
|
|
|
+ fpc_widestr_decr_ref (S1);
|
|
|
+ S1:=nil;
|
|
|
+ end;
|
|
|
+{$else FPC_WINLIKEWIDESTRING}
|
|
|
+ If S2<>nil then
|
|
|
+ If PWideRec(S2-WideFirstOff)^.Ref>0 then
|
|
|
+ inclocked(PWideRec(S2-WideFirstOff)^.ref);
|
|
|
+ { Decrease the reference count on the old S1 }
|
|
|
+ fpc_widestr_decr_ref (S1);
|
|
|
+ s1:=s2;
|
|
|
+{$endif FPC_WINLIKEWIDESTRING}
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+{ alias for internal use }
|
|
|
+Procedure fpc_WideStr_Assign (Var S1 : Pointer;S2 : Pointer);[external name 'FPC_WIDESTR_ASSIGN'];
|
|
|
+
|
|
|
+{$ifndef STR_CONCAT_PROCS}
|
|
|
+
|
|
|
+function fpc_WideStr_Concat (const S1,S2 : WideString): WideString; compilerproc;
|
|
|
+Var
|
|
|
+ Size,Location : SizeInt;
|
|
|
+ pc : pwidechar;
|
|
|
+begin
|
|
|
+ { only assign if s1 or s2 is empty }
|
|
|
+ if (S1='') then
|
|
|
+ begin
|
|
|
+ result:=s2;
|
|
|
+ exit;
|
|
|
+ end;
|
|
|
+ if (S2='') then
|
|
|
+ begin
|
|
|
+ result:=s1;
|
|
|
+ exit;
|
|
|
+ end;
|
|
|
+ Location:=Length(S1);
|
|
|
+ Size:=length(S2);
|
|
|
+ SetLength(result,Size+Location);
|
|
|
+ pc:=pwidechar(result);
|
|
|
+ Move(S1[1],pc^,Location*sizeof(WideChar));
|
|
|
+ inc(pc,location);
|
|
|
+ Move(S2[1],pc^,(Size+1)*sizeof(WideChar));
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+function fpc_WideStr_Concat_multi (const sarr:array of Widestring): widestring; compilerproc;
|
|
|
+Var
|
|
|
+ i : Longint;
|
|
|
+ p : pointer;
|
|
|
+ pc : pwidechar;
|
|
|
+ Size,NewSize : SizeInt;
|
|
|
+begin
|
|
|
+ { First calculate size of the result so we can do
|
|
|
+ a single call to SetLength() }
|
|
|
+ NewSize:=0;
|
|
|
+ for i:=low(sarr) to high(sarr) do
|
|
|
+ inc(Newsize,length(sarr[i]));
|
|
|
+ SetLength(result,NewSize);
|
|
|
+ pc:=pwidechar(result);
|
|
|
+ for i:=low(sarr) to high(sarr) do
|
|
|
+ begin
|
|
|
+ p:=pointer(sarr[i]);
|
|
|
+ if assigned(p) then
|
|
|
+ begin
|
|
|
+ Size:=length(widestring(p));
|
|
|
+ Move(pwidechar(p)^,pc^,(Size+1)*sizeof(WideChar));
|
|
|
+ inc(pc,size);
|
|
|
+ end;
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+{$else STR_CONCAT_PROCS}
|
|
|
+
|
|
|
+procedure fpc_WideStr_Concat (var DestS:Widestring;const S1,S2 : WideString); compilerproc;
|
|
|
+Var
|
|
|
+ Size,Location : SizeInt;
|
|
|
+ same : boolean;
|
|
|
+begin
|
|
|
+ { only assign if s1 or s2 is empty }
|
|
|
+ if (S1='') then
|
|
|
+ begin
|
|
|
+ DestS:=s2;
|
|
|
+ exit;
|
|
|
+ end;
|
|
|
+ if (S2='') then
|
|
|
+ begin
|
|
|
+ DestS:=s1;
|
|
|
+ exit;
|
|
|
+ end;
|
|
|
+ Location:=Length(S1);
|
|
|
+ Size:=length(S2);
|
|
|
+ { Use Pointer() typecasts to prevent extra conversion code }
|
|
|
+ if Pointer(DestS)=Pointer(S1) then
|
|
|
+ begin
|
|
|
+ same:=Pointer(S1)=Pointer(S2);
|
|
|
+ SetLength(DestS,Size+Location);
|
|
|
+ if same then
|
|
|
+ Move(Pointer(DestS)^,(Pointer(DestS)+Location*sizeof(WideChar))^,(Size)*sizeof(WideChar))
|
|
|
+ else
|
|
|
+ Move(Pointer(S2)^,(Pointer(DestS)+Location*sizeof(WideChar))^,(Size+1)*sizeof(WideChar));
|
|
|
+ end
|
|
|
+ else if Pointer(DestS)=Pointer(S2) then
|
|
|
+ begin
|
|
|
+ SetLength(DestS,Size+Location);
|
|
|
+ Move(Pointer(DestS)^,(Pointer(DestS)+Location*sizeof(WideChar))^,(Size+1)*sizeof(WideChar));
|
|
|
+ Move(Pointer(S1)^,Pointer(DestS)^,Location*sizeof(WideChar));
|
|
|
+ end
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ DestS:='';
|
|
|
+ SetLength(DestS,Size+Location);
|
|
|
+ Move(Pointer(S1)^,Pointer(DestS)^,Location*sizeof(WideChar));
|
|
|
+ Move(Pointer(S2)^,(Pointer(DestS)+Location*sizeof(WideChar))^,(Size+1)*sizeof(WideChar));
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+procedure fpc_WideStr_Concat_multi (var DestS:Widestring;const sarr:array of Widestring); compilerproc;
|
|
|
+Var
|
|
|
+ lowstart,i : Longint;
|
|
|
+ p,pc : pointer;
|
|
|
+ Size,NewLen,
|
|
|
+ OldDestLen : SizeInt;
|
|
|
+ destcopy : widestring;
|
|
|
+begin
|
|
|
+ if high(sarr)=0 then
|
|
|
+ begin
|
|
|
+ DestS:='';
|
|
|
+ exit;
|
|
|
+ end;
|
|
|
+ lowstart:=low(sarr);
|
|
|
+ if Pointer(DestS)=Pointer(sarr[lowstart]) then
|
|
|
+ inc(lowstart);
|
|
|
+ { Check for another reuse, then we can't use
|
|
|
+ the append optimization }
|
|
|
+ for i:=lowstart to high(sarr) do
|
|
|
+ begin
|
|
|
+ if Pointer(DestS)=Pointer(sarr[i]) then
|
|
|
+ begin
|
|
|
+ { if DestS is used somewhere in the middle of the expression,
|
|
|
+ we need to make sure the original string still exists after
|
|
|
+ we empty/modify DestS }
|
|
|
+ destcopy:=dests;
|
|
|
+ lowstart:=low(sarr);
|
|
|
+ break;
|
|
|
+ end;
|
|
|
+ end;
|
|
|
+ { Start with empty DestS if we start with concatting
|
|
|
+ the first array element }
|
|
|
+ if lowstart=low(sarr) then
|
|
|
+ DestS:='';
|
|
|
+ OldDestLen:=length(DestS);
|
|
|
+ { Calculate size of the result so we can do
|
|
|
+ a single call to SetLength() }
|
|
|
+ NewLen:=0;
|
|
|
+ for i:=low(sarr) to high(sarr) do
|
|
|
+ inc(NewLen,length(sarr[i]));
|
|
|
+ SetLength(DestS,NewLen);
|
|
|
+ { Concat all strings, except the string we already
|
|
|
+ copied in DestS }
|
|
|
+ pc:=Pointer(DestS)+OldDestLen*sizeof(WideChar);
|
|
|
+ for i:=lowstart to high(sarr) do
|
|
|
+ begin
|
|
|
+ p:=pointer(sarr[i]);
|
|
|
+ if assigned(p) then
|
|
|
+ begin
|
|
|
+ Size:=length(widestring(p));
|
|
|
+ Move(p^,pc^,(Size+1)*sizeof(WideChar));
|
|
|
+ inc(pc,size*sizeof(WideChar));
|
|
|
+ end;
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+{$endif STR_CONCAT_PROCS}
|
|
|
+
|
|
|
+Function fpc_Char_To_WChar(const c : Char): WideChar; compilerproc;
|
|
|
+var
|
|
|
+ w: widestring;
|
|
|
+begin
|
|
|
+ widestringmanager.Ansi2WideMoveProc(@c, w, 1);
|
|
|
+ fpc_Char_To_WChar:= w[1];
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+Function fpc_Char_To_WideStr(const c : Char): WideString; compilerproc;
|
|
|
+{
|
|
|
+ Converts a Char to a WideString;
|
|
|
+}
|
|
|
+begin
|
|
|
+ Setlength(fpc_Char_To_WideStr,1);
|
|
|
+ fpc_Char_To_WideStr[1]:=c;
|
|
|
+ { Terminating Zero }
|
|
|
+ PWideChar(Pointer(fpc_Char_To_WideStr)+sizeof(WideChar))^:=#0;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Function fpc_WChar_To_Char(const c : WideChar): Char; compilerproc;
|
|
|
+{
|
|
|
+ Converts a WideChar to a Char;
|
|
|
+}
|
|
|
+var
|
|
|
+ s: ansistring;
|
|
|
+begin
|
|
|
+ widestringmanager.Wide2AnsiMoveProc(@c, s, 1);
|
|
|
+ if length(s)=1 then
|
|
|
+ fpc_WChar_To_Char:= s[1]
|
|
|
+ else
|
|
|
+ fpc_WChar_To_Char:='?';
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Function fpc_WChar_To_WideStr(const c : WideChar): WideString; compilerproc;
|
|
|
+{
|
|
|
+ Converts a WideChar to a WideString;
|
|
|
+}
|
|
|
+begin
|
|
|
+ Setlength (fpc_WChar_To_WideStr,1);
|
|
|
+ fpc_WChar_To_WideStr[1]:= c;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Function fpc_WChar_To_AnsiStr(const c : WideChar): AnsiString; compilerproc;
|
|
|
+{
|
|
|
+ Converts a WideChar to a AnsiString;
|
|
|
+}
|
|
|
+begin
|
|
|
+ widestringmanager.Wide2AnsiMoveProc(@c, fpc_WChar_To_AnsiStr, 1);
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+{$ifndef FPC_STRTOSHORTSTRINGPROC}
|
|
|
+Function fpc_WChar_To_ShortStr(const c : WideChar): ShortString; compilerproc;
|
|
|
+{
|
|
|
+ Converts a WideChar to a ShortString;
|
|
|
+}
|
|
|
+var
|
|
|
+ s: ansistring;
|
|
|
+begin
|
|
|
+ widestringmanager.Wide2AnsiMoveProc(@c, s, 1);
|
|
|
+ fpc_WChar_To_ShortStr:= s;
|
|
|
+end;
|
|
|
+{$else FPC_STRTOSHORTSTRINGPROC}
|
|
|
+procedure fpc_WChar_To_ShortStr(out res : shortstring;const c : WideChar) compilerproc;
|
|
|
+{
|
|
|
+ Converts a WideChar to a ShortString;
|
|
|
+}
|
|
|
+var
|
|
|
+ s: ansistring;
|
|
|
+begin
|
|
|
+ widestringmanager.Wide2AnsiMoveProc(@c,s,1);
|
|
|
+ res:=s;
|
|
|
+end;
|
|
|
+{$endif FPC_STRTOSHORTSTRINGPROC}
|
|
|
+
|
|
|
+
|
|
|
+Function fpc_PChar_To_WideStr(const p : pchar): WideString; compilerproc;
|
|
|
+Var
|
|
|
+ L : SizeInt;
|
|
|
+begin
|
|
|
+ if (not assigned(p)) or (p[0]=#0) Then
|
|
|
+ { result is automatically set to '' }
|
|
|
+ exit;
|
|
|
+ l:=IndexChar(p^,-1,#0);
|
|
|
+ widestringmanager.Ansi2WideMoveProc(P,fpc_PChar_To_WideStr,l);
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Function fpc_CharArray_To_WideStr(const arr: array of char; zerobased: boolean = true): WideString; compilerproc;
|
|
|
+var
|
|
|
+ i : SizeInt;
|
|
|
+begin
|
|
|
+ if (zerobased) then
|
|
|
+ begin
|
|
|
+ if (arr[0]=#0) Then
|
|
|
+ { result is automatically set to '' }
|
|
|
+ exit;
|
|
|
+ i:=IndexChar(arr,high(arr)+1,#0);
|
|
|
+ if i = -1 then
|
|
|
+ i := high(arr)+1;
|
|
|
+ end
|
|
|
+ else
|
|
|
+ i := high(arr)+1;
|
|
|
+ SetLength(fpc_CharArray_To_WideStr,i);
|
|
|
+ widestringmanager.Ansi2WideMoveProc (pchar(@arr),fpc_CharArray_To_WideStr,i);
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+{$ifndef FPC_STRTOSHORTSTRINGPROC}
|
|
|
+function fpc_WideCharArray_To_ShortStr(const arr: array of widechar; zerobased: boolean = true): shortstring;[public,alias:'FPC_WIDECHARARRAY_TO_SHORTSTR']; compilerproc;
|
|
|
+var
|
|
|
+ l: longint;
|
|
|
+ index: longint;
|
|
|
+ len: byte;
|
|
|
+ temp: ansistring;
|
|
|
+begin
|
|
|
+ l := high(arr)+1;
|
|
|
+ if l>=256 then
|
|
|
+ l:=255
|
|
|
+ else if l<0 then
|
|
|
+ l:=0;
|
|
|
+ if zerobased then
|
|
|
+ begin
|
|
|
+ index:=IndexWord(arr[0],l,0);
|
|
|
+ if (index < 0) then
|
|
|
+ len := l
|
|
|
+ else
|
|
|
+ len := index;
|
|
|
+ end
|
|
|
+ else
|
|
|
+ len := l;
|
|
|
+ widestringmanager.Wide2AnsiMoveProc (pwidechar(@arr),temp,len);
|
|
|
+ fpc_WideCharArray_To_ShortStr := temp;
|
|
|
+end;
|
|
|
+{$else FPC_STRTOSHORTSTRINGPROC}
|
|
|
+procedure fpc_WideCharArray_To_ShortStr(out res : shortstring;const arr: array of widechar; zerobased: boolean = true);[public,alias:'FPC_WIDECHARARRAY_TO_SHORTSTR']; compilerproc;
|
|
|
+var
|
|
|
+ l: longint;
|
|
|
+ index: ptrint;
|
|
|
+ len: byte;
|
|
|
+ temp: ansistring;
|
|
|
+begin
|
|
|
+ l := high(arr)+1;
|
|
|
+ if l>=high(res)+1 then
|
|
|
+ l:=high(res)
|
|
|
+ else if l<0 then
|
|
|
+ l:=0;
|
|
|
+ if zerobased then
|
|
|
+ begin
|
|
|
+ index:=IndexWord(arr[0],l,0);
|
|
|
+ if index<0 then
|
|
|
+ len:=l
|
|
|
+ else
|
|
|
+ len:=index;
|
|
|
+ end
|
|
|
+ else
|
|
|
+ len:=l;
|
|
|
+ widestringmanager.Wide2AnsiMoveProc (pwidechar(@arr),temp,len);
|
|
|
+ res:=temp;
|
|
|
+end;
|
|
|
+{$endif FPC_STRTOSHORTSTRINGPROC}
|
|
|
+
|
|
|
+Function fpc_WideCharArray_To_AnsiStr(const arr: array of widechar; zerobased: boolean = true): AnsiString; compilerproc;
|
|
|
+var
|
|
|
+ i : SizeInt;
|
|
|
+begin
|
|
|
+ if (zerobased) then
|
|
|
+ begin
|
|
|
+ i:=IndexWord(arr,high(arr)+1,0);
|
|
|
+ if i = -1 then
|
|
|
+ i := high(arr)+1;
|
|
|
+ end
|
|
|
+ else
|
|
|
+ i := high(arr)+1;
|
|
|
+ SetLength(fpc_WideCharArray_To_AnsiStr,i);
|
|
|
+ widestringmanager.Wide2AnsiMoveProc (pwidechar(@arr),fpc_WideCharArray_To_AnsiStr,i);
|
|
|
+end;
|
|
|
+
|
|
|
+Function fpc_WideCharArray_To_WideStr(const arr: array of widechar; zerobased: boolean = true): WideString; compilerproc;
|
|
|
+var
|
|
|
+ i : SizeInt;
|
|
|
+begin
|
|
|
+ if (zerobased) then
|
|
|
+ begin
|
|
|
+ i:=IndexWord(arr,high(arr)+1,0);
|
|
|
+ if i = -1 then
|
|
|
+ i := high(arr)+1;
|
|
|
+ end
|
|
|
+ else
|
|
|
+ i := high(arr)+1;
|
|
|
+ SetLength(fpc_WideCharArray_To_WideStr,i);
|
|
|
+ Move(arr[0], Pointer(fpc_WideCharArray_To_WideStr)^,i*sizeof(WideChar));
|
|
|
+end;
|
|
|
+
|
|
|
+{$ifndef FPC_STRTOCHARARRAYPROC}
|
|
|
+
|
|
|
+{ inside the compiler, the resulttype is modified to that of the actual }
|
|
|
+{ chararray we're converting to (JM) }
|
|
|
+function fpc_widestr_to_chararray(arraysize: SizeInt; const src: WideString): fpc_big_chararray;[public,alias: 'FPC_WIDESTR_TO_CHARARRAY']; compilerproc;
|
|
|
+var
|
|
|
+ len: SizeInt;
|
|
|
+ temp: ansistring;
|
|
|
+begin
|
|
|
+ len := length(src);
|
|
|
+ { make sure we don't dereference src if it can be nil (JM) }
|
|
|
+ if len > 0 then
|
|
|
+ widestringmanager.wide2ansimoveproc(pwidechar(@src[1]),temp,len);
|
|
|
+ len := length(temp);
|
|
|
+ if len > arraysize then
|
|
|
+ len := arraysize;
|
|
|
+{$r-}
|
|
|
+ move(temp[1],fpc_widestr_to_chararray[0],len);
|
|
|
+ fillchar(fpc_widestr_to_chararray[len],arraysize-len,0);
|
|
|
+{$ifdef RangeCheckWasOn}
|
|
|
+{$r+}
|
|
|
+{$endif}
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+{ inside the compiler, the resulttype is modified to that of the actual }
|
|
|
+{ widechararray we're converting to (JM) }
|
|
|
+function fpc_widestr_to_widechararray(arraysize: SizeInt; const src: WideString): fpc_big_widechararray;[public,alias: 'FPC_WIDESTR_TO_WIDECHARARRAY']; compilerproc;
|
|
|
+var
|
|
|
+ len: SizeInt;
|
|
|
+begin
|
|
|
+ len := length(src);
|
|
|
+ if len > arraysize then
|
|
|
+ len := arraysize;
|
|
|
+{$r-}
|
|
|
+ { make sure we don't try to access element 1 of the ansistring if it's nil }
|
|
|
+ if len > 0 then
|
|
|
+ move(src[1],fpc_widestr_to_widechararray[0],len*SizeOf(WideChar));
|
|
|
+ fillchar(fpc_widestr_to_widechararray[len],(arraysize-len)*SizeOf(WideChar),0);
|
|
|
+{$ifdef RangeCheckWasOn}
|
|
|
+{$r+}
|
|
|
+{$endif}
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+{ inside the compiler, the resulttype is modified to that of the actual }
|
|
|
+{ chararray we're converting to (JM) }
|
|
|
+function fpc_ansistr_to_widechararray(arraysize: SizeInt; const src: AnsiString): fpc_big_widechararray;[public,alias: 'FPC_ANSISTR_TO_WIDECHARARRAY']; compilerproc;
|
|
|
+var
|
|
|
+ len: SizeInt;
|
|
|
+ temp: widestring;
|
|
|
+begin
|
|
|
+ len := length(src);
|
|
|
+ { make sure we don't dereference src if it can be nil (JM) }
|
|
|
+ if len > 0 then
|
|
|
+ widestringmanager.ansi2widemoveproc(pchar(@src[1]),temp,len);
|
|
|
+ len := length(temp);
|
|
|
+ if len > arraysize then
|
|
|
+ len := arraysize;
|
|
|
+
|
|
|
+{$r-}
|
|
|
+ move(temp[1],fpc_ansistr_to_widechararray[0],len*sizeof(widechar));
|
|
|
+ fillchar(fpc_ansistr_to_widechararray[len],(arraysize-len)*SizeOf(WideChar),0);
|
|
|
+{$ifdef RangeCheckWasOn}
|
|
|
+{$r+}
|
|
|
+{$endif}
|
|
|
+end;
|
|
|
+
|
|
|
+function fpc_shortstr_to_widechararray(arraysize: SizeInt; const src: ShortString): fpc_big_widechararray;[public,alias: 'FPC_SHORTSTR_TO_WIDECHARARRAY']; compilerproc;
|
|
|
+var
|
|
|
+ len: longint;
|
|
|
+ temp : widestring;
|
|
|
+begin
|
|
|
+ len := length(src);
|
|
|
+ { make sure we don't access char 1 if length is 0 (JM) }
|
|
|
+ if len > 0 then
|
|
|
+ widestringmanager.ansi2widemoveproc(pchar(@src[1]),temp,len);
|
|
|
+ len := length(temp);
|
|
|
+ if len > arraysize then
|
|
|
+ len := arraysize;
|
|
|
+{$r-}
|
|
|
+ move(temp[1],fpc_shortstr_to_widechararray[0],len*sizeof(widechar));
|
|
|
+ fillchar(fpc_shortstr_to_widechararray[len],(arraysize-len)*SizeOf(WideChar),0);
|
|
|
+{$ifdef RangeCheckWasOn}
|
|
|
+{$r+}
|
|
|
+{$endif}
|
|
|
+end;
|
|
|
+
|
|
|
+{$else ndef FPC_STRTOCHARARRAYPROC}
|
|
|
+
|
|
|
+procedure fpc_widestr_to_chararray(out res: array of char; const src: WideString); compilerproc;
|
|
|
+var
|
|
|
+ len: SizeInt;
|
|
|
+ temp: ansistring;
|
|
|
+begin
|
|
|
+ len := length(src);
|
|
|
+ { make sure we don't dereference src if it can be nil (JM) }
|
|
|
+ if len > 0 then
|
|
|
+ widestringmanager.wide2ansimoveproc(pwidechar(@src[1]),temp,len);
|
|
|
+ len := length(temp);
|
|
|
+ if len > length(res) then
|
|
|
+ len := length(res);
|
|
|
+{$r-}
|
|
|
+ move(temp[1],res[0],len);
|
|
|
+ fillchar(res[len],length(res)-len,0);
|
|
|
+{$ifdef RangeCheckWasOn}
|
|
|
+{$r+}
|
|
|
+{$endif}
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+procedure fpc_widestr_to_widechararray(out res: array of widechar; const src: WideString); compilerproc;
|
|
|
+var
|
|
|
+ len: SizeInt;
|
|
|
+begin
|
|
|
+ len := length(src);
|
|
|
+ if len > length(res) then
|
|
|
+ len := length(res);
|
|
|
+{$r-}
|
|
|
+ { make sure we don't try to access element 1 of the ansistring if it's nil }
|
|
|
+ if len > 0 then
|
|
|
+ move(src[1],res[0],len*SizeOf(WideChar));
|
|
|
+ fillchar(res[len],(length(res)-len)*SizeOf(WideChar),0);
|
|
|
+{$ifdef RangeCheckWasOn}
|
|
|
+{$r+}
|
|
|
+{$endif}
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+procedure fpc_ansistr_to_widechararray(out res: array of widechar; const src: AnsiString); compilerproc;
|
|
|
+var
|
|
|
+ len: SizeInt;
|
|
|
+ temp: widestring;
|
|
|
+begin
|
|
|
+ len := length(src);
|
|
|
+ { make sure we don't dereference src if it can be nil (JM) }
|
|
|
+ if len > 0 then
|
|
|
+ widestringmanager.ansi2widemoveproc(pchar(@src[1]),temp,len);
|
|
|
+ len := length(temp);
|
|
|
+ if len > length(res) then
|
|
|
+ len := length(res);
|
|
|
+
|
|
|
+{$r-}
|
|
|
+ move(temp[1],res[0],len*sizeof(widechar));
|
|
|
+ fillchar(res[len],(length(res)-len)*SizeOf(WideChar),0);
|
|
|
+{$ifdef RangeCheckWasOn}
|
|
|
+{$r+}
|
|
|
+{$endif}
|
|
|
+end;
|
|
|
+
|
|
|
+procedure fpc_shortstr_to_widechararray(out res: array of widechar; const src: ShortString); compilerproc;
|
|
|
+var
|
|
|
+ len: longint;
|
|
|
+ temp : widestring;
|
|
|
+begin
|
|
|
+ len := length(src);
|
|
|
+ { make sure we don't access char 1 if length is 0 (JM) }
|
|
|
+ if len > 0 then
|
|
|
+ widestringmanager.ansi2widemoveproc(pchar(@src[1]),temp,len);
|
|
|
+ len := length(temp);
|
|
|
+ if len > length(res) then
|
|
|
+ len := length(res);
|
|
|
+{$r-}
|
|
|
+ move(temp[1],res[0],len*sizeof(widechar));
|
|
|
+ fillchar(res[len],(length(res)-len)*SizeOf(WideChar),0);
|
|
|
+{$ifdef RangeCheckWasOn}
|
|
|
+{$r+}
|
|
|
+{$endif}
|
|
|
+end;
|
|
|
+
|
|
|
+{$endif ndef FPC_STRTOCHARARRAYPROC}
|
|
|
+
|
|
|
+Function fpc_WideStr_Compare(const S1,S2 : WideString): SizeInt;[Public,Alias : 'FPC_WIDESTR_COMPARE']; compilerproc;
|
|
|
+{
|
|
|
+ Compares 2 WideStrings;
|
|
|
+ The result is
|
|
|
+ <0 if S1<S2
|
|
|
+ 0 if S1=S2
|
|
|
+ >0 if S1>S2
|
|
|
+}
|
|
|
+Var
|
|
|
+ MaxI,Temp : SizeInt;
|
|
|
+begin
|
|
|
+ if pointer(S1)=pointer(S2) then
|
|
|
+ begin
|
|
|
+ fpc_WideStr_Compare:=0;
|
|
|
+ exit;
|
|
|
+ end;
|
|
|
+ Maxi:=Length(S1);
|
|
|
+ temp:=Length(S2);
|
|
|
+ If MaxI>Temp then
|
|
|
+ MaxI:=Temp;
|
|
|
+ Temp:=CompareWord(S1[1],S2[1],MaxI);
|
|
|
+ if temp=0 then
|
|
|
+ temp:=Length(S1)-Length(S2);
|
|
|
+ fpc_WideStr_Compare:=Temp;
|
|
|
+end;
|
|
|
+
|
|
|
+Function fpc_WideStr_Compare_Equal(const S1,S2 : WideString): SizeInt;[Public,Alias : 'FPC_WIDESTR_COMPARE_EQUAL']; compilerproc;
|
|
|
+{
|
|
|
+ Compares 2 WideStrings for equality only;
|
|
|
+ The result is
|
|
|
+ 0 if S1=S2
|
|
|
+ <>0 if S1<>S2
|
|
|
+}
|
|
|
+Var
|
|
|
+ MaxI : SizeInt;
|
|
|
+begin
|
|
|
+ if pointer(S1)=pointer(S2) then
|
|
|
+ exit(0);
|
|
|
+ Maxi:=Length(S1);
|
|
|
+ If MaxI<>Length(S2) then
|
|
|
+ exit(-1)
|
|
|
+ else
|
|
|
+ exit(CompareWord(S1[1],S2[1],MaxI));
|
|
|
+end;
|
|
|
+
|
|
|
+Procedure fpc_WideStr_CheckZero(p : pointer);[Public,Alias : 'FPC_WIDESTR_CHECKZERO']; compilerproc;
|
|
|
+begin
|
|
|
+ if p=nil then
|
|
|
+ HandleErrorFrame(201,get_frame);
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Procedure fpc_WideStr_CheckRange(len,index : SizeInt);[Public,Alias : 'FPC_WIDESTR_RANGECHECK']; compilerproc;
|
|
|
+begin
|
|
|
+ if (index>len div 2) or (Index<1) then
|
|
|
+ HandleErrorFrame(201,get_frame);
|
|
|
+end;
|
|
|
+
|
|
|
+Procedure fpc_WideStr_SetLength(Var S : WideString; l : SizeInt);[Public,Alias : 'FPC_WIDESTR_SETLENGTH']; compilerproc;
|
|
|
+{
|
|
|
+ Sets The length of string S to L.
|
|
|
+ Makes sure S is unique, and contains enough room.
|
|
|
+}
|
|
|
+Var
|
|
|
+ Temp : Pointer;
|
|
|
+ movelen: SizeInt;
|
|
|
+begin
|
|
|
+ if (l>0) then
|
|
|
+ begin
|
|
|
+ if Pointer(S)=nil then
|
|
|
+ begin
|
|
|
+ { Need a complete new string...}
|
|
|
+ Pointer(s):=NewWideString(l);
|
|
|
+ end
|
|
|
+ { windows doesn't support reallocing widestrings, this code
|
|
|
+ is anyways subject to be removed because widestrings shouldn't be
|
|
|
+ ref. counted anymore (FK) }
|
|
|
+ else
|
|
|
+ if
|
|
|
+{$ifdef MSWINDOWS}
|
|
|
+ not winwidestringalloc and
|
|
|
+{$endif MSWINDOWS}
|
|
|
+{$ifdef FPC_WINLIKEWIDESTRING}
|
|
|
+ not IsWideStringConstant(pointer(S))
|
|
|
+{$else}
|
|
|
+ (PWideRec(Pointer(S)-WideFirstOff)^.Ref = 1)
|
|
|
+{$endif FPC_WINLIKEWIDESTRING}
|
|
|
+ then
|
|
|
+ begin
|
|
|
+ Dec(Pointer(S),WideFirstOff);
|
|
|
+ if SizeUInt(L*sizeof(WideChar)+WideRecLen)>MemSize(Pointer(S)) then
|
|
|
+ reallocmem(pointer(S), L*sizeof(WideChar)+WideRecLen);
|
|
|
+ Inc(Pointer(S), WideFirstOff);
|
|
|
+ end
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ { Reallocation is needed... }
|
|
|
+ Temp:=Pointer(NewWideString(L));
|
|
|
+ if Length(S)>0 then
|
|
|
+ begin
|
|
|
+ if l < succ(length(s)) then
|
|
|
+ movelen := l
|
|
|
+ { also move terminating null }
|
|
|
+ else
|
|
|
+ movelen := succ(length(s));
|
|
|
+ Move(Pointer(S)^,Temp^,movelen * Sizeof(WideChar));
|
|
|
+ end;
|
|
|
+ fpc_widestr_decr_ref(Pointer(S));
|
|
|
+ Pointer(S):=Temp;
|
|
|
+ end;
|
|
|
+ { Force nil termination in case it gets shorter }
|
|
|
+ PWord(Pointer(S)+l*sizeof(WideChar))^:=0;
|
|
|
+{$ifdef MSWINDOWS}
|
|
|
+ if not winwidestringalloc then
|
|
|
+{$endif MSWINDOWS}
|
|
|
+ PWideRec(Pointer(S)-WideFirstOff)^.Len:=l*sizeof(WideChar);
|
|
|
+ end
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ { Length=0 }
|
|
|
+ if Pointer(S)<>nil then
|
|
|
+ fpc_widestr_decr_ref (Pointer(S));
|
|
|
+ Pointer(S):=Nil;
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+{*****************************************************************************
|
|
|
+ Public functions, In interface.
|
|
|
+*****************************************************************************}
|
|
|
+
|
|
|
+function WideCharToString(S : PWideChar) : AnsiString;
|
|
|
+ begin
|
|
|
+ result:=WideCharLenToString(s,Length(WideString(s)));
|
|
|
+ end;
|
|
|
+
|
|
|
+function StringToWideChar(const Src : AnsiString;Dest : PWideChar;DestSize : SizeInt) : PWideChar;
|
|
|
+ var
|
|
|
+ temp:widestring;
|
|
|
+ begin
|
|
|
+ widestringmanager.Ansi2WideMoveProc(PChar(Src),temp,Length(Src));
|
|
|
+ if Length(temp)<DestSize then
|
|
|
+ move(temp[1],Dest^,Length(temp)*SizeOf(WideChar))
|
|
|
+ else
|
|
|
+ move(temp[1],Dest^,(DestSize-1)*SizeOf(WideChar));
|
|
|
+
|
|
|
+ Dest[DestSize-1]:=#0;
|
|
|
+
|
|
|
+ result:=Dest;
|
|
|
+
|
|
|
+ end;
|
|
|
+
|
|
|
+function WideCharLenToString(S : PWideChar;Len : SizeInt) : AnsiString;
|
|
|
+ begin
|
|
|
+ //SetLength(result,Len);
|
|
|
+ widestringmanager.Wide2AnsiMoveproc(S,result,Len);
|
|
|
+ end;
|
|
|
+
|
|
|
+procedure WideCharLenToStrVar(Src : PWideChar;Len : SizeInt;out Dest : AnsiString);
|
|
|
+ begin
|
|
|
+ Dest:=WideCharLenToString(Src,Len);
|
|
|
+ end;
|
|
|
+
|
|
|
+procedure WideCharToStrVar(S : PWideChar;out Dest : AnsiString);
|
|
|
+ begin
|
|
|
+ Dest:=WideCharToString(S);
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+Function fpc_widestr_Unique(Var S : Pointer): Pointer; [Public,Alias : 'FPC_WIDESTR_UNIQUE']; compilerproc;
|
|
|
+{$ifdef FPC_WINLIKEWIDESTRING}
|
|
|
+ begin
|
|
|
+ pointer(result) := pointer(s);
|
|
|
+ end;
|
|
|
+{$else FPC_WINLIKEWIDESTRING}
|
|
|
+{
|
|
|
+ Make sure reference count of S is 1,
|
|
|
+ using copy-on-write semantics.
|
|
|
+}
|
|
|
+Var
|
|
|
+ SNew : Pointer;
|
|
|
+ L : SizeInt;
|
|
|
+begin
|
|
|
+ pointer(result) := pointer(s);
|
|
|
+ If Pointer(S)=Nil then
|
|
|
+ exit;
|
|
|
+ if PWideRec(Pointer(S)-WideFirstOff)^.Ref<>1 then
|
|
|
+ begin
|
|
|
+ L:=PWideRec(Pointer(S)-WideFirstOff)^.len div sizeof(WideChar);
|
|
|
+ SNew:=NewWideString (L);
|
|
|
+ Move (PWideChar(S)^,SNew^,(L+1)*sizeof(WideChar));
|
|
|
+ PWideRec(SNew-WideFirstOff)^.len:=L * sizeof(WideChar);
|
|
|
+ fpc_widestr_decr_ref (Pointer(S)); { Thread safe }
|
|
|
+ pointer(S):=SNew;
|
|
|
+ pointer(result):=SNew;
|
|
|
+ end;
|
|
|
+end;
|
|
|
+{$endif FPC_WINLIKEWIDESTRING}
|
|
|
+
|
|
|
+
|
|
|
+Function Fpc_WideStr_Copy (Const S : WideString; Index,Size : SizeInt) : WideString;compilerproc;
|
|
|
+var
|
|
|
+ ResultAddress : Pointer;
|
|
|
+begin
|
|
|
+ ResultAddress:=Nil;
|
|
|
+ dec(index);
|
|
|
+ if Index < 0 then
|
|
|
+ Index := 0;
|
|
|
+ { Check Size. Accounts for Zero-length S, the double check is needed because
|
|
|
+ Size can be maxint and will get <0 when adding index }
|
|
|
+ if (Size>Length(S)) or
|
|
|
+ (Index+Size>Length(S)) then
|
|
|
+ Size:=Length(S)-Index;
|
|
|
+ If Size>0 then
|
|
|
+ begin
|
|
|
+ If Index<0 Then
|
|
|
+ Index:=0;
|
|
|
+ ResultAddress:=Pointer(NewWideString (Size));
|
|
|
+ if ResultAddress<>Nil then
|
|
|
+ begin
|
|
|
+ Move (PWideChar(S)[Index],ResultAddress^,Size*sizeof(WideChar));
|
|
|
+ PWideRec(ResultAddress-WideFirstOff)^.Len:=Size*sizeof(WideChar);
|
|
|
+ PWideChar(ResultAddress+Size*sizeof(WideChar))^:=#0;
|
|
|
+ end;
|
|
|
+ end;
|
|
|
+ Pointer(fpc_widestr_Copy):=ResultAddress;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Function Pos (Const Substr : WideString; Const Source : WideString) : SizeInt;
|
|
|
+var
|
|
|
+ i,MaxLen : SizeInt;
|
|
|
+ pc : pwidechar;
|
|
|
+begin
|
|
|
+ Pos:=0;
|
|
|
+ if Length(SubStr)>0 then
|
|
|
+ begin
|
|
|
+ MaxLen:=Length(source)-Length(SubStr);
|
|
|
+ i:=0;
|
|
|
+ pc:=@source[1];
|
|
|
+ while (i<=MaxLen) do
|
|
|
+ begin
|
|
|
+ inc(i);
|
|
|
+ if (SubStr[1]=pc^) and
|
|
|
+ (CompareWord(Substr[1],pc^,Length(SubStr))=0) then
|
|
|
+ begin
|
|
|
+ Pos:=i;
|
|
|
+ exit;
|
|
|
+ end;
|
|
|
+ inc(pc);
|
|
|
+ end;
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+{ Faster version for a widechar alone }
|
|
|
+Function Pos (c : WideChar; Const s : WideString) : SizeInt;
|
|
|
+var
|
|
|
+ i: SizeInt;
|
|
|
+ pc : pwidechar;
|
|
|
+begin
|
|
|
+ pc:=@s[1];
|
|
|
+ for i:=1 to length(s) do
|
|
|
+ begin
|
|
|
+ if pc^=c then
|
|
|
+ begin
|
|
|
+ pos:=i;
|
|
|
+ exit;
|
|
|
+ end;
|
|
|
+ inc(pc);
|
|
|
+ end;
|
|
|
+ pos:=0;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Function Pos (c : WideChar; Const s : AnsiString) : SizeInt;
|
|
|
+var
|
|
|
+ i: SizeInt;
|
|
|
+ pc : pchar;
|
|
|
+begin
|
|
|
+ pc:=@s[1];
|
|
|
+ for i:=1 to length(s) do
|
|
|
+ begin
|
|
|
+ if widechar(pc^)=c then
|
|
|
+ begin
|
|
|
+ pos:=i;
|
|
|
+ exit;
|
|
|
+ end;
|
|
|
+ inc(pc);
|
|
|
+ end;
|
|
|
+ pos:=0;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Function Pos (c : AnsiString; Const s : WideString) : SizeInt;{$ifdef SYSTEMINLINE}inline;{$endif}
|
|
|
+ begin
|
|
|
+ result:=Pos(WideString(c),s);
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+Function Pos (c : ShortString; Const s : WideString) : SizeInt;{$ifdef SYSTEMINLINE}inline;{$endif}
|
|
|
+ begin
|
|
|
+ result:=Pos(WideString(c),s);
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+Function Pos (c : WideString; Const s : AnsiString) : SizeInt;{$ifdef SYSTEMINLINE}inline;{$endif}
|
|
|
+ begin
|
|
|
+ result:=Pos(c,WideString(s));
|
|
|
+ end;
|
|
|
+
|
|
|
+{ Faster version for a char alone. Must be implemented because }
|
|
|
+{ pos(c: char; const s: shortstring) also exists, so otherwise }
|
|
|
+{ using pos(char,pchar) will always call the shortstring version }
|
|
|
+{ (exact match for first argument), also with $h+ (JM) }
|
|
|
+Function Pos (c : Char; Const s : WideString) : SizeInt;
|
|
|
+var
|
|
|
+ i: SizeInt;
|
|
|
+ wc : widechar;
|
|
|
+ pc : pwidechar;
|
|
|
+begin
|
|
|
+ wc:=c;
|
|
|
+ pc:=@s[1];
|
|
|
+ for i:=1 to length(s) do
|
|
|
+ begin
|
|
|
+ if pc^=wc then
|
|
|
+ begin
|
|
|
+ pos:=i;
|
|
|
+ exit;
|
|
|
+ end;
|
|
|
+ inc(pc);
|
|
|
+ end;
|
|
|
+ pos:=0;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+Procedure Delete (Var S : WideString; Index,Size: SizeInt);
|
|
|
+Var
|
|
|
+ LS : SizeInt;
|
|
|
+begin
|
|
|
+ If Length(S)=0 then
|
|
|
+ exit;
|
|
|
+ if index<=0 then
|
|
|
+ exit;
|
|
|
+ LS:=PWideRec(Pointer(S)-WideFirstOff)^.Len div sizeof(WideChar);
|
|
|
+ if (Index<=LS) and (Size>0) then
|
|
|
+ begin
|
|
|
+ UniqueString (S);
|
|
|
+ if Size+Index>LS then
|
|
|
+ Size:=LS-Index+1;
|
|
|
+ if Index+Size<=LS then
|
|
|
+ begin
|
|
|
+ Dec(Index);
|
|
|
+ Move(PWideChar(S)[Index+Size],PWideChar(S)[Index],(LS-Index+1)*sizeof(WideChar));
|
|
|
+ end;
|
|
|
+ Setlength(s,LS-Size);
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Procedure Insert (Const Source : WideString; Var S : WideString; Index : SizeInt);
|
|
|
+var
|
|
|
+ Temp : WideString;
|
|
|
+ LS : SizeInt;
|
|
|
+begin
|
|
|
+ If Length(Source)=0 then
|
|
|
+ exit;
|
|
|
+ if index <= 0 then
|
|
|
+ index := 1;
|
|
|
+ Ls:=Length(S);
|
|
|
+ if index > LS then
|
|
|
+ index := LS+1;
|
|
|
+ Dec(Index);
|
|
|
+ Pointer(Temp) := NewWideString(Length(Source)+LS);
|
|
|
+ SetLength(Temp,Length(Source)+LS);
|
|
|
+ If Index>0 then
|
|
|
+ move (PWideChar(S)^,PWideChar(Temp)^,Index*sizeof(WideChar));
|
|
|
+ Move (PWideChar(Source)^,PWideChar(Temp)[Index],Length(Source)*sizeof(WideChar));
|
|
|
+ If (LS-Index)>0 then
|
|
|
+ Move(PWideChar(S)[Index],PWideChar(temp)[Length(Source)+index],(LS-Index)*sizeof(WideChar));
|
|
|
+ S:=Temp;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+function UpCase(const s : WideString) : WideString;
|
|
|
+begin
|
|
|
+ result:=widestringmanager.UpperWideStringProc(s);
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Procedure SetString (Out S : WideString; Buf : PWideChar; Len : SizeInt);
|
|
|
+var
|
|
|
+ BufLen: SizeInt;
|
|
|
+begin
|
|
|
+ SetLength(S,Len);
|
|
|
+ If (Buf<>Nil) and (Len>0) then
|
|
|
+ begin
|
|
|
+ BufLen := IndexWord(Buf^, Len+1, 0);
|
|
|
+ If (BufLen>0) and (BufLen < Len) then
|
|
|
+ Len := BufLen;
|
|
|
+ Move (Buf[0],S[1],Len*sizeof(WideChar));
|
|
|
+ PWideChar(Pointer(S)+Len*sizeof(WideChar))^:=#0;
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Procedure SetString (Out S : WideString; Buf : PChar; Len : SizeInt);
|
|
|
+var
|
|
|
+ BufLen: SizeInt;
|
|
|
+begin
|
|
|
+ SetLength(S,Len);
|
|
|
+ If (Buf<>Nil) and (Len>0) then
|
|
|
+ begin
|
|
|
+ BufLen := IndexByte(Buf^, Len+1, 0);
|
|
|
+ If (BufLen>0) and (BufLen < Len) then
|
|
|
+ Len := BufLen;
|
|
|
+ widestringmanager.Ansi2WideMoveProc(Buf,S,Len);
|
|
|
+ //PWideChar(Pointer(S)+Len*sizeof(WideChar))^:=#0;
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Function fpc_Val_Real_WideStr(Const S : WideString; out Code : ValSInt): ValReal; [public, alias:'FPC_VAL_REAL_WIDESTR']; compilerproc;
|
|
|
+Var
|
|
|
+ SS : String;
|
|
|
+begin
|
|
|
+ fpc_Val_Real_WideStr := 0;
|
|
|
+ if length(S) > 255 then
|
|
|
+ code := 256
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ SS := S;
|
|
|
+ Val(SS,fpc_Val_Real_WideStr,code);
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+{$ifdef FPC_HAS_VALSTR_ENUM}
|
|
|
+function fpc_val_enum_widestr(str2ordindex:pointer;const s:widestring;out code:valsint):longint;compilerproc;
|
|
|
+
|
|
|
+var ss:shortstring;
|
|
|
+
|
|
|
+begin
|
|
|
+ if length(s)>255 then
|
|
|
+ code:=256
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ ss:=s;
|
|
|
+ val(ss,fpc_val_enum_widestr,code);
|
|
|
+ end;
|
|
|
+end;
|
|
|
+{$endif FPC_HAS_VALSTR_ENUM}
|
|
|
+
|
|
|
+Function fpc_Val_Currency_WideStr(Const S : WideString; out Code : ValSInt): Currency; [public, alias:'FPC_VAL_CURRENCY_WIDESTR']; compilerproc;
|
|
|
+Var
|
|
|
+ SS : String;
|
|
|
+begin
|
|
|
+ if length(S) > 255 then
|
|
|
+ begin
|
|
|
+ fpc_Val_Currency_WideStr:=0;
|
|
|
+ code := 256;
|
|
|
+ end
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ SS := S;
|
|
|
+ Val(SS,fpc_Val_Currency_WideStr,code);
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Function fpc_Val_UInt_WideStr (Const S : WideString; out Code : ValSInt): ValUInt; [public, alias:'FPC_VAL_UINT_WIDESTR']; compilerproc;
|
|
|
+Var
|
|
|
+ SS : ShortString;
|
|
|
+begin
|
|
|
+ fpc_Val_UInt_WideStr := 0;
|
|
|
+ if length(S) > 255 then
|
|
|
+ code := 256
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ SS := S;
|
|
|
+ Val(SS,fpc_Val_UInt_WideStr,code);
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Function fpc_Val_SInt_WideStr (DestSize: SizeInt; Const S : WideString; out Code : ValSInt): ValSInt; [public, alias:'FPC_VAL_SINT_WIDESTR']; compilerproc;
|
|
|
+Var
|
|
|
+ SS : ShortString;
|
|
|
+begin
|
|
|
+ fpc_Val_SInt_WideStr:=0;
|
|
|
+ if length(S)>255 then
|
|
|
+ code:=256
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ SS := S;
|
|
|
+ fpc_Val_SInt_WideStr := int_Val_SInt_ShortStr(DestSize,SS,Code);
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+{$ifndef CPU64}
|
|
|
+
|
|
|
+Function fpc_Val_qword_WideStr (Const S : WideString; out Code : ValSInt): qword; [public, alias:'FPC_VAL_QWORD_WIDESTR']; compilerproc;
|
|
|
+Var
|
|
|
+ SS : ShortString;
|
|
|
+begin
|
|
|
+ fpc_Val_qword_WideStr:=0;
|
|
|
+ if length(S)>255 then
|
|
|
+ code:=256
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ SS := S;
|
|
|
+ Val(SS,fpc_Val_qword_WideStr,Code);
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Function fpc_Val_int64_WideStr (Const S : WideString; out Code : ValSInt): Int64; [public, alias:'FPC_VAL_INT64_WIDESTR']; compilerproc;
|
|
|
+Var
|
|
|
+ SS : ShortString;
|
|
|
+begin
|
|
|
+ fpc_Val_int64_WideStr:=0;
|
|
|
+ if length(S)>255 then
|
|
|
+ code:=256
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ SS := S;
|
|
|
+ Val(SS,fpc_Val_int64_WideStr,Code);
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+{$endif CPU64}
|
|
|
+
|
|
|
+
|
|
|
+procedure fpc_WideStr_Float(d : ValReal;len,fr,rt : SizeInt;out s : WideString);compilerproc;
|
|
|
+var
|
|
|
+ ss : shortstring;
|
|
|
+begin
|
|
|
+ str_real(len,fr,d,treal_type(rt),ss);
|
|
|
+ s:=ss;
|
|
|
+end;
|
|
|
+
|
|
|
+{$ifdef FPC_HAS_VALSTR_ENUM}
|
|
|
+procedure fpc_widestr_enum(ordinal,len:sizeint;typinfo,ord2strindex:pointer;out s:widestring);compilerproc;
|
|
|
+
|
|
|
+var ss:shortstring;
|
|
|
+
|
|
|
+begin
|
|
|
+ fpc_shortstr_enum(ordinal,len,typinfo,ord2strindex,ss);
|
|
|
+ s:=ss;
|
|
|
+end;
|
|
|
+{$endif FPC_HAS_VALSTR_ENUM}
|
|
|
+
|
|
|
+{$ifdef FPC_HAS_STR_CURRENCY}
|
|
|
+procedure fpc_WideStr_Currency(c : Currency;len,fr : SizeInt;out s : WideString);compilerproc;
|
|
|
+var
|
|
|
+ ss : shortstring;
|
|
|
+begin
|
|
|
+ str(c:len:fr,ss);
|
|
|
+ s:=ss;
|
|
|
+end;
|
|
|
+{$endif FPC_HAS_STR_CURRENCY}
|
|
|
+
|
|
|
+Procedure fpc_WideStr_SInt(v : ValSint; Len : SizeInt; out S : WideString);compilerproc;
|
|
|
+Var
|
|
|
+ SS : ShortString;
|
|
|
+begin
|
|
|
+ Str (v:Len,SS);
|
|
|
+ S:=SS;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Procedure fpc_WideStr_UInt(v : ValUInt;Len : SizeInt; out S : WideString);compilerproc;
|
|
|
+Var
|
|
|
+ SS : ShortString;
|
|
|
+begin
|
|
|
+ str(v:Len,SS);
|
|
|
+ S:=SS;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+{$ifndef CPU64}
|
|
|
+
|
|
|
+Procedure fpc_WideStr_Int64(v : Int64; Len : SizeInt; out S : WideString);compilerproc;
|
|
|
+Var
|
|
|
+ SS : ShortString;
|
|
|
+begin
|
|
|
+ Str (v:Len,SS);
|
|
|
+ S:=SS;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+Procedure fpc_WideStr_Qword(v : Qword;Len : SizeInt; out S : WideString);compilerproc;
|
|
|
+Var
|
|
|
+ SS : ShortString;
|
|
|
+begin
|
|
|
+ str(v:Len,SS);
|
|
|
+ S:=SS;
|
|
|
+end;
|
|
|
+
|
|
|
+{$endif CPU64}
|
|
|
+
|
|
|
+function UnicodeToUtf8(Dest: PChar; Source: PWideChar; MaxBytes: SizeInt): SizeInt;{$ifdef SYSTEMINLINE}inline;{$endif}
|
|
|
+ begin
|
|
|
+ if assigned(Source) then
|
|
|
+ Result:=UnicodeToUtf8(Dest,MaxBytes,Source,IndexWord(Source^,-1,0))
|
|
|
+ else
|
|
|
+ Result:=0;
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+function UnicodeToUtf8(Dest: PChar; MaxDestBytes: SizeUInt; Source: PWideChar; SourceChars: SizeUInt): SizeUInt;
|
|
|
+ var
|
|
|
+ i,j : SizeUInt;
|
|
|
+ w : word;
|
|
|
+ begin
|
|
|
+ result:=0;
|
|
|
+ if source=nil then
|
|
|
+ exit;
|
|
|
+ i:=0;
|
|
|
+ j:=0;
|
|
|
+ if assigned(Dest) then
|
|
|
+ begin
|
|
|
+ while (i<SourceChars) and (j<MaxDestBytes) do
|
|
|
+ begin
|
|
|
+ w:=word(Source[i]);
|
|
|
+ case w of
|
|
|
+ 0..$7f:
|
|
|
+ begin
|
|
|
+ Dest[j]:=char(w);
|
|
|
+ inc(j);
|
|
|
+ end;
|
|
|
+ $80..$7ff:
|
|
|
+ begin
|
|
|
+ if j+1>=MaxDestBytes then
|
|
|
+ break;
|
|
|
+ Dest[j]:=char($c0 or (w shr 6));
|
|
|
+ Dest[j+1]:=char($80 or (w and $3f));
|
|
|
+ inc(j,2);
|
|
|
+ end;
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ if j+2>=MaxDestBytes then
|
|
|
+ break;
|
|
|
+ Dest[j]:=char($e0 or (w shr 12));
|
|
|
+ Dest[j+1]:=char($80 or ((w shr 6)and $3f));
|
|
|
+ Dest[j+2]:=char($80 or (w and $3f));
|
|
|
+ inc(j,3);
|
|
|
+ end;
|
|
|
+ end;
|
|
|
+ inc(i);
|
|
|
+ end;
|
|
|
+
|
|
|
+ if j>MaxDestBytes-1 then
|
|
|
+ j:=MaxDestBytes-1;
|
|
|
+
|
|
|
+ Dest[j]:=#0;
|
|
|
+ end
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ while i<SourceChars do
|
|
|
+ begin
|
|
|
+ case word(Source[i]) of
|
|
|
+ $0..$7f:
|
|
|
+ inc(j);
|
|
|
+ $80..$7ff:
|
|
|
+ inc(j,2);
|
|
|
+ else
|
|
|
+ inc(j,3);
|
|
|
+ end;
|
|
|
+ inc(i);
|
|
|
+ end;
|
|
|
+ end;
|
|
|
+ result:=j+1;
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+function Utf8ToUnicode(Dest: PWideChar; Source: PChar; MaxChars: SizeInt): SizeInt;{$ifdef SYSTEMINLINE}inline;{$endif}
|
|
|
+ begin
|
|
|
+ if assigned(Source) then
|
|
|
+ Result:=Utf8ToUnicode(Dest,MaxChars,Source,strlen(Source))
|
|
|
+ else
|
|
|
+ Result:=0;
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+function Utf8ToUnicode(Dest: PWideChar; MaxDestChars: SizeUInt; Source: PChar; SourceBytes: SizeUInt): SizeUInt;
|
|
|
+
|
|
|
+var
|
|
|
+ i,j : SizeUInt;
|
|
|
+ w: SizeUInt;
|
|
|
+ b : byte;
|
|
|
+begin
|
|
|
+ if not assigned(Source) then
|
|
|
+ begin
|
|
|
+ result:=0;
|
|
|
+ exit;
|
|
|
+ end;
|
|
|
+ result:=SizeUInt(-1);
|
|
|
+ i:=0;
|
|
|
+ j:=0;
|
|
|
+ if assigned(Dest) then
|
|
|
+ begin
|
|
|
+ while (j<MaxDestChars) and (i<SourceBytes) do
|
|
|
+ begin
|
|
|
+ b:=byte(Source[i]);
|
|
|
+ w:=b;
|
|
|
+ inc(i);
|
|
|
+ // 2 or 3 bytes?
|
|
|
+ if b>=$80 then
|
|
|
+ begin
|
|
|
+ w:=b and $3f;
|
|
|
+ if i>=SourceBytes then
|
|
|
+ exit;
|
|
|
+ // 3 bytes?
|
|
|
+ if (b and $20)<>0 then
|
|
|
+ begin
|
|
|
+ b:=byte(Source[i]);
|
|
|
+ inc(i);
|
|
|
+ if i>=SourceBytes then
|
|
|
+ exit;
|
|
|
+ if (b and $c0)<>$80 then
|
|
|
+ exit;
|
|
|
+ w:=(w shl 6) or (b and $3f);
|
|
|
+ end;
|
|
|
+ b:=byte(Source[i]);
|
|
|
+ w:=(w shl 6) or (b and $3f);
|
|
|
+ if (b and $c0)<>$80 then
|
|
|
+ exit;
|
|
|
+ inc(i);
|
|
|
+ end;
|
|
|
+ Dest[j]:=WideChar(w);
|
|
|
+ inc(j);
|
|
|
+ end;
|
|
|
+ if j>=MaxDestChars then j:=MaxDestChars-1;
|
|
|
+ Dest[j]:=#0;
|
|
|
+ end
|
|
|
+ else
|
|
|
+ begin
|
|
|
+ while i<SourceBytes do
|
|
|
+ begin
|
|
|
+ b:=byte(Source[i]);
|
|
|
+ inc(i);
|
|
|
+ // 2 or 3 bytes?
|
|
|
+ if b>=$80 then
|
|
|
+ begin
|
|
|
+ if i>=SourceBytes then
|
|
|
+ exit;
|
|
|
+ // 3 bytes?
|
|
|
+ b := b and $3f;
|
|
|
+ if (b and $20)<>0 then
|
|
|
+ begin
|
|
|
+ b:=byte(Source[i]);
|
|
|
+ inc(i);
|
|
|
+ if i>=SourceBytes then
|
|
|
+ exit;
|
|
|
+ if (b and $c0)<>$80 then
|
|
|
+ exit;
|
|
|
+ end;
|
|
|
+ if (byte(Source[i]) and $c0)<>$80 then
|
|
|
+ exit;
|
|
|
+ inc(i);
|
|
|
+ end;
|
|
|
+ inc(j);
|
|
|
+ end;
|
|
|
+ end;
|
|
|
+ result:=j+1;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+function UTF8Encode(const s : WideString) : UTF8String;
|
|
|
+ var
|
|
|
+ i : SizeInt;
|
|
|
+ hs : UTF8String;
|
|
|
+ begin
|
|
|
+ result:='';
|
|
|
+ if s='' then
|
|
|
+ exit;
|
|
|
+ SetLength(hs,length(s)*3);
|
|
|
+ i:=UnicodeToUtf8(pchar(hs),length(hs)+1,PWideChar(s),length(s));
|
|
|
+ if i>0 then
|
|
|
+ begin
|
|
|
+ SetLength(hs,i-1);
|
|
|
+ result:=hs;
|
|
|
+ end;
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+function UTF8Decode(const s : UTF8String): WideString;
|
|
|
+ var
|
|
|
+ i : SizeInt;
|
|
|
+ hs : WideString;
|
|
|
+ begin
|
|
|
+ result:='';
|
|
|
+ if s='' then
|
|
|
+ exit;
|
|
|
+ SetLength(hs,length(s));
|
|
|
+ i:=Utf8ToUnicode(PWideChar(hs),length(hs)+1,pchar(s),length(s));
|
|
|
+ if i>0 then
|
|
|
+ begin
|
|
|
+ SetLength(hs,i-1);
|
|
|
+ result:=hs;
|
|
|
+ end;
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+function AnsiToUtf8(const s : ansistring): UTF8String;{$ifdef SYSTEMINLINE}inline;{$endif}
|
|
|
+ begin
|
|
|
+ Result:=Utf8Encode(s);
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+function Utf8ToAnsi(const s : UTF8String) : ansistring;{$ifdef SYSTEMINLINE}inline;{$endif}
|
|
|
+ begin
|
|
|
+ Result:=Utf8Decode(s);
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+{ converts an utf-16 code point or surrogate pair to utf-32 }
|
|
|
+function utf16toutf32(const S: WideString; const index: SizeInt; out len: longint): UCS4Char; [public, alias: 'FPC_UTF16TOUTF32'];
|
|
|
+var
|
|
|
+ w: widechar;
|
|
|
+begin
|
|
|
+ { UTF-16 points in the range #$0-#$D7FF and #$E000-#$FFFF }
|
|
|
+ { are the same in UTF-32 }
|
|
|
+ w:=s[index];
|
|
|
+ if (w<=#$d7ff) or
|
|
|
+ (w>=#$e000) then
|
|
|
+ begin
|
|
|
+ result:=UCS4Char(w);
|
|
|
+ len:=1;
|
|
|
+ end
|
|
|
+ { valid surrogate pair? }
|
|
|
+ else if (w<=#$dbff) and
|
|
|
+ { w>=#$d7ff check not needed, checked above }
|
|
|
+ (index<length(s)) and
|
|
|
+ (s[index+1]>=#$dc00) and
|
|
|
+ (s[index+1]<=#$dfff) then
|
|
|
+ { convert the surrogate pair to UTF-32 }
|
|
|
+ begin
|
|
|
+ result:=(UCS4Char(w)-$d800) shl 10 + (UCS4Char(s[index+1])-$dc00) + $10000;
|
|
|
+ len:=2;
|
|
|
+ end
|
|
|
+ else
|
|
|
+ { invalid surrogate -> do nothing }
|
|
|
+ begin
|
|
|
+ result:=UCS4Char(w);
|
|
|
+ len:=1;
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+function WideStringToUCS4String(const s : WideString) : UCS4String;
|
|
|
+ var
|
|
|
+ i, slen,
|
|
|
+ destindex : SizeInt;
|
|
|
+ len : longint;
|
|
|
+ begin
|
|
|
+ slen:=length(s);
|
|
|
+ setlength(result,slen+1);
|
|
|
+ i:=1;
|
|
|
+ destindex:=0;
|
|
|
+ while (i<=slen) do
|
|
|
+ begin
|
|
|
+ result[destindex]:=utf16toutf32(s,i,len);
|
|
|
+ inc(destindex);
|
|
|
+ inc(i,len);
|
|
|
+ end;
|
|
|
+ result[destindex]:=UCS4Char(0);
|
|
|
+ { destindex <= slen }
|
|
|
+ setlength(result,destindex);
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+{ concatenates an utf-32 char to a widestring. S *must* be unique when entering. }
|
|
|
+procedure ConcatUTF32ToWideStr(const nc: UCS4Char; var S: WideString; var index: SizeInt);
|
|
|
+var
|
|
|
+ p : PWideChar;
|
|
|
+begin
|
|
|
+ { if nc > $ffff, we need two places }
|
|
|
+ if (index+ord(nc > $ffff)>length(s)) then
|
|
|
+ if (length(s) < 10*256) then
|
|
|
+ setlength(s,length(s)+10)
|
|
|
+ else
|
|
|
+ setlength(s,length(s)+length(s) shr 8);
|
|
|
+ { we know that s is unique -> avoid uniquestring calls}
|
|
|
+ p:=@s[index];
|
|
|
+ if (nc<$ffff) then
|
|
|
+ begin
|
|
|
+ p^:=widechar(nc);
|
|
|
+ inc(index);
|
|
|
+ end
|
|
|
+ else if (nc<=$10ffff) then
|
|
|
+ begin
|
|
|
+ p^:=widechar((nc - $10000) shr 10 + $d800);
|
|
|
+ (p+1)^:=widechar((nc - $10000) and $3ff + $dc00);
|
|
|
+ inc(index,2);
|
|
|
+ end
|
|
|
+ else
|
|
|
+ { invalid code point }
|
|
|
+ begin
|
|
|
+ p^:='?';
|
|
|
+ inc(index);
|
|
|
+ end;
|
|
|
+end;
|
|
|
+
|
|
|
+
|
|
|
+function UCS4StringToWideString(const s : UCS4String) : WideString;
|
|
|
+ var
|
|
|
+ i : SizeInt;
|
|
|
+ resindex : SizeInt;
|
|
|
+ len : longint;
|
|
|
+ begin
|
|
|
+ SetLength(result,length(s));
|
|
|
+ resindex:=1;
|
|
|
+ for i:=0 to high(s) do
|
|
|
+ ConcatUTF32ToWideStr(s[i],result,resindex);
|
|
|
+ { adjust result length (may be too big due to growing }
|
|
|
+ { for surrogate pairs) }
|
|
|
+ setlength(result,resindex-1);
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+procedure unimplementedwidestring;
|
|
|
+ begin
|
|
|
+ HandleErrorFrame(215,get_frame);
|
|
|
+ end;
|
|
|
+
|
|
|
+{$warnings off}
|
|
|
+function GenericWideCase(const s : WideString) : WideString;
|
|
|
+ begin
|
|
|
+ unimplementedwidestring;
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+function CompareWideString(const s1, s2 : WideString) : PtrInt;
|
|
|
+ begin
|
|
|
+ unimplementedwidestring;
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+function CompareTextWideString(const s1, s2 : WideString): PtrInt;
|
|
|
+ begin
|
|
|
+ unimplementedwidestring;
|
|
|
+ end;
|
|
|
+
|
|
|
+
|
|
|
+function CharLengthPChar(const Str: PChar): PtrInt;
|
|
|
+ begin
|
|
|
+ unimplementedwidestring;
|
|
|
+ end;
|
|
|
+{$warnings on}
|
|
|
+
|
|
|
+procedure initwidestringmanager;
|
|
|
+ begin
|
|
|
+ fillchar(widestringmanager,sizeof(widestringmanager),0);
|
|
|
+{$ifndef HAS_WIDESTRINGMANAGER}
|
|
|
+ widestringmanager.Wide2AnsiMoveProc:=@defaultWide2AnsiMove;
|
|
|
+ widestringmanager.Ansi2WideMoveProc:=@defaultAnsi2WideMove;
|
|
|
+ widestringmanager.UpperWideStringProc:=@GenericWideCase;
|
|
|
+ widestringmanager.LowerWideStringProc:=@GenericWideCase;
|
|
|
+{$endif HAS_WIDESTRINGMANAGER}
|
|
|
+ widestringmanager.CompareWideStringProc:=@CompareWideString;
|
|
|
+ widestringmanager.CompareTextWideStringProc:=@CompareTextWideString;
|
|
|
+ widestringmanager.CharLengthPCharProc:=@CharLengthPChar;
|
|
|
+ end;
|
Jonas Maebe